701 



The two extreme septa at each end of the sporidium are close together 

 and near the end of the sporidium. 



On bark of a trunk oi Liquidamhar, South Carolina, (Curtis.) 



HYSTEROGRAPHIUM, Corda. 



Icones Fungorum, V, p. 34, 



Perithecia erumpent, sessile, elongated or elliptical, obtuse, promi- 

 nent, mostly simple, opening bj- a narrow, elongated, longitudinal cleft, 

 black and carbonaceous. Asci thick-walled, clavate, 8-spored, with 

 paraphyses branching above and forming a colored epithecium. Spo- 

 ridia 1-2-seriate, elliptical or ovate, obtuse, becoming murifoi'm, brown 

 or, in the subgenus Gloniopsis, hyaline. (Rehm in Die Pilze). 



The genus differs from Hysterium in its muriform sporidia. 



* Sporidia colored. 

 H. Fraxini, (Pers.) 



Hysterium Fraxini, Pers. Syn. p. 98. 

 Hysterogyaphium Fraxini, De Not. Pir. 1st. p. 22, 

 Exsicc. Rehm Asc. 26.— Kunze, F. Sel. 376.— Desm. PI. Cr. Ed. I, 83.— Roum. F. G. 2569, 

 5450.— Sydow, M. March. 951.— EH. N. A. F. 997.— Rab. F. E. 58. 



Perithecia scattered or gregarious, erumpent, elliptical, black, 

 obtuse above, 1-1 1 mm. long, \-\ mm. wide; lips swollen, smooth, 

 partially open so as to expose the narrow disk. Asci clavate, rounded 

 above, 150-200x30-40 /^, 8-spored, with filiform paraphyses. Spo- 

 ridia biseriate, oblong-elliptical, scarcely constricted in the middle, 

 7-9-septate and muriform, dark yellow-brown, 30-40 x 15-18 //. 



On dead limbs of Fraxinus, New York, Pennsylvania, Iowa and 

 Canada; probably common throughout the United States. 



H. Syringse, (Schw.) 



Hysterium Syringa, Schw. Syn. N. Am. 2073. 



Tryblidium SyringcE, Cke. Disc, of the U. S. p. 32, Grev. IV, PI. 67, fig. 10. 

 Tryblidium dealbatum. Get. BuU. Torr. Bot. Club, V, p. 40. 

 Hysterographiuvi Syringes, Sacc. Syll. 5763. 



At first subimmersed, at length denuded, mostly scattered over 

 pallid spots and often surrounded by a black crust, ovate-elliptical, 

 acuminate or subobtuse, black, not striate; lips at length widely 

 "■aping and exposing the subrugose, black disk. Asci oblong-clavate, 

 rather abruptly contracted into a short stipe below, obtuse and I'ounded 

 above, paraphysate, 8-spored, 100-112x20-25 fi. Sporidia subbi- 

 seriate, ovate-elliptical, 6-8-septate and muriform, yellowish-hyaline at 

 first, becoming dark brown and almost opake, 25-34 x 12-15 //. 



